SURVEY OF BIOCHEMISTRY Glycogen. 2 Ways To Generate Glucose. Glycogenolysis. Gluconeogenesis. Break down of glycogen. Synthesis of glucose from non-carb precursors. Glucose 1-Phosphate. Glucose. Pyruvate. Lactate. Glucose 6-Phosphate. Energetics of Reversing Glycolysis.
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Break down of glycogen
Synthesis of glucose fromnon-carb precursors
Reversing glycolysis is not energetically feasible!
Hexokinase ∆G° = -17 kJ/mol
Phosphofructokinase ∆G° = -14 kJ/mol
PyruvateKinase ∆G° = -31 kJ/mol
Ref: Rodney Boyer Interactive Concepts in Biochemistry
Fig 16-20 does not show pyruvate!
Draw another viewof this process thatmay be more helpful
∆G value comparisons
By what mechanisms do these enzymes work?